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Prosthetic

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https://www.readbyqxmd.com/read/28220366/zirconia-implants-and-peek-restorations-for-the-replacement-of-upper-molars
#1
José María Parmigiani-Izquierdo, María Eugenia Cabaña-Muñoz, José Joaquín Merino, Arturo Sánchez-Pérez
BACKGROUND: One of the disadvantages of the zirconia implants is the lack of elasticity, which is increased with the use of ceramic or zirconia crowns. The consequences that could result from this lack of elasticity have led to the search for new materials with improved mechanical properties. CASE PRESENTATION: A patient who is a 45-year-old woman, non-smoker and has no medical record of interest with a longitudinal fracture in the palatal root of molar tooth 1...
December 2017: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/28220058/semg-sensor-using-polypyrrole-coated-nonwoven-fabric-sheet-for-practical-control-of-prosthetic-hand
#2
Yinlai Jiang, Masami Togane, Baoliang Lu, Hiroshi Yokoi
One of the greatest challenges of using a myoelectric prosthetic hand in daily life is to conveniently measure stable myoelectric signals. This study proposes a novel surface electromyography (sEMG) sensor using polypyrrole-coated nonwoven fabric sheet as electrodes (PPy electrodes) to allow people with disabilities to control prosthetic limbs. The PPy electrodes are sewn on an elastic band to guarantee close contact with the skin and thus reduce the contact electrical impedance between the electrodes and the skin...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28219826/hot-topics-in-reactive-oxygen-therapy-antimicrobial-and-immunological-mechanisms-safety-and-clinical-applications
#3
REVIEW
Matthew Dryden, Jonathan Cooke, Rami Salib, Rebecca Holding, Sylvia Pender, Jill Brooks
Reactive oxygen species (ROS), when combined with various delivery mechanisms, has the potential to become a powerful novel therapeutic agent against difficult-to-treat infections, especially those involving biofilm. It is important in the context of the global antibiotic resistance crisis. ROS is rapidly active in vitro against all Gram-positive and Gram-negative bacteria tested. ROS also has antifungal and antiviral properties. ROS prevents the formation of biofilms caused by a range of bacterial species in wounds and respiratory epithelium...
February 17, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28219819/laparoscopic-ventral-hernia-repair-with-composite-mesh-analysis-of-risk-factors-for-recurrence-in-185-patients-with-5-years-follow-up
#4
Mario Nardi, Paolo Millo, Riccardo Brachet Contul, Riccardo Lorusso, Antonella Usai, Manuela Grivon, Fabio Persico, Elisa Ponte, Paolo Bocchia, Salvatore Razzi
BACKGROUND: Laparoscopic ventral hernia repair is widely used although its clinical indications are often debated. The aim of this study is to describe our surgical experience in order to establish the safety, efficacy, feasibility of laparoscopic ventral hernia repair and to identify the factors that influence the risk of recurrence in a group of patients treated with only one type of prosthetic mesh and by the same surgical team. MATERIALS AND METHODS: Between January 2007 and December 2016, 512 patients were admitted to the General and Urgent Surgery Unit, with diagnosis of ventral hernia...
February 17, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28219578/valved-conduit-attached-to-left-ventricular-outflow-tract-for-valve-detachment-in-beh%C3%A3-et-s-disease
#5
Liang-Wan Chen, Xi-Jie Wu, Hua Cao, Xiao-Fu Dai
Standard aortic valve replacement for aortic regurgitation caused by Behçet's disease is frequently complicated by postoperative recurrent prosthetic valve detachment. To prevent this, we have developed a modified Bentall procedure, in which the valved conduit is proximally attached to the left ventricular outflow tract instead of to the fragile annulus, based on the fact that the left ventricular outflow tract myocardium is rarely involved in Behçet's disease. This modified Bentall procedure was performed in 5 Behçet's disease patients with prosthetic valve detachment after primary aortic valve replacement, and satisfactory results were achieved...
March 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28219563/repeated-prosthetic-mitral-valve-thrombosis-in-fluke%C3%A2-infection-induced-hypereosinophilic-syndrome
#6
Yiran Zhang, Liang Ma
A 43-year-old female patient with mitral valve stenosis and hypereosinophilia on admission received mechanical mitral valve replacement. During the 2 years after the first surgery, the patient underwent two mitral valve revision operations for repeated prosthetic mitral valve thrombosis. During the 2-year period, the patient's absolute eosinophil count was found elevated repeatedly. Finally, fluke antibody detection revealed fluke infection and, after praziquantel treatment, a normal level of absolute eosinophil count has been maintained and recurrent thrombosis has not occurred for 18 months...
March 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28218379/the-corail-stem-as-a-reverse-hybrid-survivorship-and-x-ray-analysis-at-10-years
#7
Helge Wangen, Lars Nordsletten, Jens G Boldt, Anne M Fenstad, David E Beverland
BACKGROUND: The use of a cemented cup together with an uncemented stem in total hip arthroplasty (THA) has become popular in Norway and Sweden during the last decade. The results of this prosthetic concept, reverse hybrid THA have been sparsely described.We report our experience of reverse hybrid THA, using the Elite plus polyethylene cemented cup together with the Corail fully hydroxyapatite-coated uncemented stem and a 28-mm alumina ceramic head. PATIENTS AND METHODS: 132 consecutive reverse hybrid hip arthroplasties were performed from January 2000 to December 2003 in 126 patients with a mean age of 54...
February 8, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28218057/propionibacterium-acnes-is-developing-gradual-increase-in-resistance-to-oral-tetracyclines
#8
Keisuke Nakase, Hidemasa Nakaminami, Yuko Takenaka, Nobukazu Hayashi, Makoto Kawashima, Norihisa Noguchi
Propionibacterium acnes is an anaerobic bacterium that causes deep infection in organs and prosthetic joints, in addition to acne vulgaris. Many tetracycline-resistant P. acnes strains have been isolated because oral tetracyclines are frequently used as an acne treatment against P. acnes. In this study, we found a novel tetracycline resistance mechanism in P. acnes. Three doxycycline-resistant (MIC: 16 µg ml-1) strains were isolated from 69 strains in acne patients in Japan between 2010 and 2011. Additionally, six insusceptible strains (MIC: 1-2 µg ml-1) that had reduced susceptibility compared to susceptible strains (MIC: ≤0...
January 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28217567/painful-knee-prosthesis-ct-scan-to-assess-patellar-angle-and-implant-malrotation
#9
REVIEW
Antonio Spinarelli, Vito Pesce, Caterina Campagna, Giuseppe Maccagnano, Biagio Moretti
BACKGROUND: According to literature, the incidence of pain in knee prostheses is on the increase. In the last decade Authors have focused attention on rotational alignment of the prosthetic components. The aim of this study is to evaluate the efficiency of a new angle, which we define as patellar angle, in order to achieve early diagnosis of malrotation. METHODS: We set up a retrospective observational study recruiting 100 subjects who had undergone total knee prosthesis...
October 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28216849/assessment-of-implant-stability-during-various-stages-of-healing-placed-immediately-following-extraction-in-an-overdenture-situation
#10
Ashwin Thomas Koshy, T Aby Mathew, Nicholas Mathew, Angel Mary Joseph
To assess the implant stability during different stages of healing in an immediate loaded implant soon after extraction. A 73-year-old female came with a chief complaint of bad smell and irritation in her lower front gum region. On examination, she was found to be completely edentulous in the maxillary arch and partially edentulous in the mandibular arch with only the canines present bilaterally. The posterior mandibular ridge was severely resorbed and hence could not be treated with a conventional mandibular complete denture...
January 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/28216838/color-matching-in-facial-prosthetics-a-systematic-review
#11
REVIEW
Rani Ranabhatt, Kamleshwar Singh, Ramashanker Siddharth, Shuchi Tripathi, Deeksha Arya
Color matching to the surrounding skin is extremely important in patients wearing maxillofacial prostheses. It is of utmost importance to know the different techniques of color matching and coloring in maxillofacial prostheses. The purpose of this study is to review the literature data with regard to color matching in maxillofacial prosthetics. An electronic search of peer review restricted to English language dental literature was conducted to identify the relevant scientific article on color matching and coloring in maxillofacial prostheses...
January 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/28216308/craniofacial-implants-at-a-single-centre-2005-2015-retrospective-review-of-451-implants
#12
R Elledge, J Chaggar, N Knapp, T Martin, N White, D Evriviades, S Edmondson, S Parmar
Craniofacial endosseous implants are regularly used to support prostheses in the rehabilitation of complex defects, but reported success rates vary. To review our own clinical practice over 10 years, and particularly to examine the impact of radiotherapy and the timing of placement on the survival of implants, we retrospectively audited the records for all patients who had endosseous implants for prosthetic rehabilitation in our unit between 2005 and 2015. We reviewed 167 records, which gave 451 implants, of which, 222 (49%) were auricular, 98 (22%) nasal, and 131 (29%) orbital...
February 16, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28215487/executive-summary-of-management-of-prosthetic-joint-infections-clinical-practice-guidelines-by-the-spanish-society-of-infectious-diseases-and-clinical-microbiology-seimc
#13
Javier Ariza, Javier Cobo, Josu Baraia-Etxaburu, Natividad de Benito, Guillermo Bori, Javier Cabo, Pablo Corona, Jaime Esteban, Juan Pablo Horcajada, Jaime Lora-Tamayo, Oscar Murillo, Julián Palomino, Jorge Parra, Carlos Pigrau, José Luis Del Pozo, Melchor Riera, Dolores Rodríguez, Mar Sánchez-Somolinos, Alex Soriano, M Dolores Del Toro, Basilio de la Torre
The incidence of prosthetic joint infection (PJI) is expected to increase in the coming years. PJI has serious consequences for patients, and high costs for the health system. The complexity of these infections makes it necessary to organize the vast quantity of information published in the last several years. The indications for the choice of a given surgical strategy and the corresponding antimicrobial therapy are specifically reviewed. The authors selected clinically relevant questions and then reviewed the available literature in order to give recommendations according to a pre-determined level of scientific evidence...
February 16, 2017: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/28214485/outcome-of-peripheral-venous-reconstructions-during-tumor-resection
#14
Philip Y Sun, Mark D Fleming, Kendall Stauffer, Manju Kalra, Gustavo Oderich, Thomas Bower, Peter Gloviczki, Randall R DeMartino
OBJECTIVE: Peripheral venous reconstruction surgery may be necessary for appropriate oncologic resection; however, the operative approach and surgical outcomes are not well described. We report our experience with these complex reconstructions to identify best practice. METHODS: We retrospectively reviewed all adult patients who underwent peripheral vein reconstruction for tumor resection at Mayo Clinic, Rochester (2000-2015). Patients were classified into three subgroups by the location: iliac (IL), lower extremity (LE), and upper extremity (UE)...
March 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/28214456/total-wrist-arthroplasty
#15
Edward Lin, Nader Paksima
Total wrist arthroplasty (TWA), first performed in the late 19th Century, is still an infrequently used operation. It is most commonly indicated in patients with rheumatoid arthritis who have pan-carpal wrist involvement. It is an alternative to total wrist arthrodesis in patients who wish to preserve joint motion. Patients must lead a low-demand lifestyle and have failed non-operative measures. Complications are not insignificant and have been reported to be as high as 43%. Modern generation implants most often fail due to dislocation or loosening...
January 2017: Bulletin of the Hospital for Joint Diseases
https://www.readbyqxmd.com/read/28213334/reactive-oxygen-a-novel-antimicrobial-mechanism-for-targeting-biofilm-associated-infection
#16
REVIEW
Matthew S Dryden, Jonathan Cooke, Rami J Salib, Rebecca E Holding, Timothy Biggs, Ali A Salamat, Raymond N Allan, Rachel S Newby, Fenella Halstead, Beryl Oppenheim, Thomas Hall, Sophie C Cox, Liam M Grover, Zain Al-Hindi, Lilyann Novak-Frazer, Malcolm D Richardson
Reactive oxygen species (ROS) is a novel therapeutic strategy for topical or local application to wounds, mucosa or internal structures where there may be heavy bacterial bioburden with biofilm and chronic inflammation. Bacterial biofilms are a significant problem in clinical settings owing to their increased tolerance towards conventionally prescribed antibiotics and their propensity for selection of further antibacterial resistance. There is therefore a pressing need for the development of alternative therapeutic strategies that can improve antibiotic efficacy towards biofilms...
February 14, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28212099/high-density-high-radiance-%C3%AE-led-matrix-for-optogenetic-retinal-prostheses-and-planar-neural-stimulation
#17
Ahmed Soltan, Brian McGovern, Emmanuel Drakakis, Mark Neil, Pleun Maaskant, Mahbub Akhter, Jun Su Lee, Patrick Degenaar
Optical neuron stimulation arrays are important for both in-vitro biology and retinal prosthetic biomedical applications. Hence, in this work, we present an 8100 pixel high radiance photonic stimulator. The chip module vertically combines custom made gallium nitride μLEDs with a CMOS application specific integrated circuit. This is designed with active pixels to ensure random access and to allow continuous illumination of all required pixels. The μLEDs have been assembled on the chip using a solder ball flip-chip bonding technique which has allowed for reliable and repeatable manufacture...
February 13, 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28211795/a-murine-model-of-a-novel-surgical-architecture-for-proprioceptive-muscle-feedback-and-its-potential-application-to-control-of-advanced-limb-prostheses
#18
Tyler R Clites, Matthew Carty, Shriya Srinivasan, Anthony Zorzos, Hugh Herr
<i>Objective:</i> Proprioceptive mechanisms play a critical role in both reflexive and volitional lower extremity control. Significant strides have been made in the development of bionic limbs that are capable of bi-directional communication with the peripheral nervous system, but none of these systems have been capable of providing physiologically-relevant muscle-based proprioceptive feedback through natural neural pathways. In this study, we present the Agonist-antagonist Myoplastic Interface (AMI), a surgical approach with the capacity to provide graded kinesthetic feedback from a prosthesis through mechanical activation of native mechanoreceptors within residual agonist-antagonist muscle pairs...
February 17, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28209508/systematic-review-of-measures-of-impairment-and-activity-limitation-for-person-with-upper-limb-trauma-and-amputation
#19
REVIEW
Linda Resnik, Matt Borgia, Ben Silver, Jill Cancio
OBJECTIVE: Study purposes were to 1) identify outcome measures used in studies of persons with traumatic upper limb injury and/or amputation and 2) evaluate focus, content and psychometric properties of each measure. DATA SOURCES: Searches of PubMed and CINAHL for terms including upper extremity, function, activities of daily living, outcome assessment, amputation and traumatic injuries. STUDY SELECTION: Included articles had a sample of ≥10 adults with limb trauma or amputation, and were in English...
February 13, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28209276/the-aahks-clinical-research-award-what-are-the-costs-of-knee-osteoarthritis-in-the-year-prior-to-total-knee-arthroplasty
#20
Nicholas A Bedard, Spencer B Dowdle, Christopher A Anthony, David E DeMik, Michael A McHugh, Kevin J Bozic, John J Callaghan
BACKGROUND: Despite American Academy of Orthopaedic Surgeons Clinical Practice Guidelines (CPGs) related to the non-arthroplasty management of osteoarthritis (OA) of the knee, non-recommended treatments remain in common use. We sought to determine the costs associated with non-arthroplasty management of knee OA in the year prior to total knee arthroplasty (TKA) and stratify them by CPG recommendation status. METHODS: The Humana database was reviewed from 2007 to 2015 for primary TKA patients...
January 18, 2017: Journal of Arthroplasty
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